Ventilator.



L. SILBERMA'N.

VENTILATOR.

APPLICATION FILED 00126, 1908.

Patented Sept. 7, 1909.

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ANDREW. a. GRAHAM 00. murmunmmmzas. WASH NBTO 25 ism for moving the same to open and closed To all whom it may concern:

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LOUIS SILBERMAN, OF BROOKLYN, NEW YORK.

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Specification of Letters Patent.

Patented Sept. '7, 1909.

Application filed October 26, 1908. Serial No. 459,478.

Be it known that 1, Louis SILBERMAN, acitizen of the United States, residing at Brooklyn, in the county .of Kings and State of New York, have invented certain new and useful Improvements in Ventilators, of I which the following is a specification.

My invention has relation to newand useful improvements in ventilators for roofs, and particularly to the type employed in connection with theroofsof buildings for the purpose of providing a more perfect scheme of natural ventilation, also as ameans for drawing olf gases, smoke or. heated air generated within said buildings.

The principal object ofthe invention is to provide a closure for theventilator which will automatically close in case of. conflagration Within the building so as to cut oil the draft which would ordinarily tend to acceler- A further object of the invention. to provide a closure for the ventilator having improved and simplified operating mechanposition.

A further object is to provide an operating means including a fusible device for holding the same in position when the closure is open,which device when subjected to excessive heat as that arising from fire within the building, will be melted and permit the ventilator closure to move to closedposition. n

A further and important object is to provide an operating device forlthe'ventilator closure from which all chains'and-levers and similar connectin devices willbe eliminated, so that there w' 1 be no likelihood of the closurebeing heldopen by entanglement or sticking offthe chalns or levers when ci'rcumstancesdemand that the. ventilator opening should be closed promptly. and effectively.

To the ends above stated, theinvention consists in the improved construction of the parts and their arrangement in operative; combination to be fully described hereinafter and the novelty of which will .be 'particularly pointed out and distinctly-claimed.

I have fully and clearly illustrated; my invention in the accompanying drawings to i be taken as .part of: this specification and j wherein- 7 V Figure 1 is a view showing a ventilatorin vertical central section, the'same embodying the improvements of mypresent invention. Fig. 2 is a detailed perspective view of one of the elements of the invention. Fig. 3 is a transverse section on the line 8-3 of Fig. 1.

Referring to the drawings by numerals of reference-1 designates an air flue, the upper part of which constitutes the throat of a the ventilator, the same being preferably cylindrical in form,fand' may be projected 1 through an opening-inthe roof of the building (not shown) or may be supported in any suitable manner upon the. roof and placed in communication with a flue leading from the building.

Surrounding the flue or throat 1 is an annular supporting plate 3, secured to the flue at its inner edge and at its outer edge sup- 1 porting an-annular, vertically disposed casing wall 4:, said wall and plate 8 being secured together in any suitable manner. This supporting plate 3 is fluted, or reversely corrugated so as to provide alternate raised and depressed portions shown at 5 and 6 respectively. The annular. plate is so disposed with relation to the flue 1 as to be inclined upwardly and outwardly therefrom to the point at-which said plate connects with the wall 4, so that the upper channels 6 open at their lower ends into open spaces 7 adjacent the flue 1, and the under channels 5 formed by the raised portions 5, open through spaces adjacent the wall 4. By this construction it will be'apparent that water from rain or snow will not collect upon the upper surface of the plate 3 but will flow down the upper face of the plate and escape through the open spaces 7 above described. It will also be apparent that the air currents directed against the outer face of said plate will follow. the channels 5 formed by the raised portions 5 and pass out through the open spaces9 at the ends of said channels, thus providing for a continuous draft through the flue-pipe 1, without regard to the direction from which'the wind blows.

Arranged above andspaced from the upper edge of the flue 1 a conical'cover or shield 10the lower edge 11 of which is sup ported in position by means of brackets 12 secured to said cover and wall; Located in the space between the upper end of the flue pipe 1, and the cover 10 is a valve element 12 to 1 control the flow of air currents through the said flue pipe. This valve element is formed of sheet metal and is -conica in general contour being arranged with its apex downwardly, said valve being of a tend from the upper end diameter greater of the flue pipe, and being formed with a circumferential flange 13, which when the valve is in position to close the flue, rests upon the upper edge of said flue.

Within the flue 1., is a transversely disposedv bar 14 having its ends securely and rigidly connected to the fine, as at 15, said barconstituting a support forahollow, tubular post 16, mounted on SdlCl bar and extending vertically from the latter, said post being formed with oppositely disposed alining, longitudinally extending slots 17, which exofthe post to a point. intermediate theends of the latter,

Extending loosely through the post 16, andrcapable of both rotary and reciprocatory movement therein, is a barl8 constituting an operating member, the upper end of which may be rigidly connected to the valve member 12 at the apex. of the latter, and the lower end of which projects below the lower ends of the tubular post 1 6, and is formed with. a hand grasp 19 of any desirable de sign. It will be seen that by reciprocating the bar 18 verticall T the valve element 12 may be moved up and down to rest upon the upper edge of the'fiue 1 and close the same, or be raised upward to permit draft through the line.

The bar 18 is provided with a shoulder or projection, which may be of fusible material and which cooperates with the hollow post 16 t-o-hold the valve element 12 in open or raised position. This shoulder or projection preferably consists of a pin ZO'adapted to removably engage an opening 21 extending transversely through the bar 18, said pin projecting laterally on both sides of the said bar, and being arranged to rest upon the upper. edge of the tubular post 16 and thereby support the valve element inraised posi tion. This pin 20 is of less diameter than the width of the slots 17 in the post 16, and it will therefore be seen that the valve may be manually moved to closed position by the operator merely grasping the bar 18 and rotating; the same until the projecting parts of the pin 20 register with the upper ends of the slots 17 when the ventilator will drop of its own weight to closed position, the downward movement being limited by the pin striking the lower ends of said slots.

In case of conflagration, it will be apparent, that the fusible pin 20 will be melted when the heat reaches a determined point and the support for the valve element being destroyed, the latter will drop tov its closed position automatically and cut off the draft through the flue 1.

It is believed that the operation of the invention as above described will be apparent, but it may be briefly stated as followsThe parts being: as described, and it being premised that the valve is to be placed in open than that of the upper end position, a pin is placed in the opening ..1, and the operating bar- 18 is manipulated until said pin rests upon the upper edge of the tubular post 16, whereby the said valve will be maintained in open position during normal conditions. Should it become necessary to close the-line 1, it is only necessary to'rotate the barlS until the pin 20 registers "with the slots 17 when the valve element will be permitted to dropto closed position. \Vhen the valve isto be raised to open the fine 1, it is only necessary to push the bar 18 upward until the pin 20 clears the upper end of the tubular post 16, when the member 18 is rotated to carry the said pin over the upper position. In case ofcontlagration, the ends of the pin 20 are melted off, and the operating member 18 is free to move down through the tubular member, thus shutting off all draft through the air flue 1.

What I claim is 1. In a ventilator of the character described, the combination with a flue, of a closure therefor, a guide element, avertically reciprocating operating member cooperating with the guide element and engaging the closure, and a projection rigidly connected to said. member and adapted to engage a part of the guide element to maintain the closure in open relation to theflue.

2. In a ventilator of the character described, the combination with a flue, of a closure therefor, aguide element, a vertically reciprocating operating member cooperating with the guide element and engaging the closure, and a projection of fusible material rigidly connected to said member and adapted to'engage the guide element tomaintain theclosure in open relation to the fine.

3. In a ventilator of the character described, the combination with a fine, of a closure therefor, a guide element, a vertically reciprocating operating member coopcrating with the guide element and'engaging the closure, said member having an opening therethrough and a remo 'able pin mounted in said opening and adapted to engage a part .of the guide element to maintain the closure in open relation to the line.

4. In a ventilator of the character de scribed, the combination with a flue, of a closure therefor, a tubular guide element supported. on the fine, a vertically reciprocating operating member working in the guide element andi engaging said closure, and a projection on said member adapted to engage the' tubular guide element to maintain the closure in open relation to the flue.

5. I11 a. ventilator of the character described, the combination with a fine, of a closure therefor, a vertical tubular guide element having a longitudinally extending slot, a vertically reciprocating operating member working-in said guide element, and

a removable projection carriedby the operatmember working in said guide element and a removable pin carried by the operating member projecting, laterally therefrom in opposite directions above sald guide element 3 and cooperating with the upper edge thereof 1 to support the closure in open relation to the l flue and adapted to be brought into register i with said slots, to permit the closure to be t operated to close the flue.

, projection may be 7. In a ventilator of the character described, the combination with a fine, of a closure therefor, a vertical tubular guide element having a longitudinally extending slot and a shoulder, a vertically reciprocating operating member extending through sald guide element and connected to the closure, and a fusible projection on the operating member cooperating with the shoulder on the guide element to maintain the 010- sure in open relation to the flue, said operating member bein rotatable whereby said rought into register with the slot in the guide element.

In testimony whereof I affix my signature, in presence of two witnesses.

LOUIS SILBERMAN. 

